1.Humidity Indicator Card with cobalt
Humidity indicator card with cobalt is a traditional type, containing cobalt, halogen elements, change color from blue to pink
2.Humidity Indicator Card Cobalt-Free
Environment friendly, change color from brown to blue, yellow to blue, or from blue to pink
Chunwang Environmental Protection Technology Co., Ltd
1. We can design and produce according to your requirements.
2. We can offer you a high-quality&reasonable price.
3. Promptly delivery and trade assurance.
4. A good after-sale protection.
5. ODM&OEM is welcomeEstablished in 1998, Chunwang is well-known as one of the leading manufacturers and suppliers of vacuum packing humidity indicator cards in China. During the past two years, we have introduced advanced equipment and technology into our factory. Please be free to buy our cheap products made in China.